Tube clamp



FIG. 1 is a top perspective view of a tube clamp showing my new designin use;

FIG. 2 is a top perspective view thereof in a different environment ofuse;

FIG. 3 is a front elevation view thereof not in use;

FIG. 4 is a side elevation view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines of FIGS. 1-2 are for illustrative purposes only,representing unclaimed subject matter and therefore forms no part of theclaimed design.

CLAIM The ornamental design for a tube clamp, as shown and describedherein.